Tree and log sawing machine



N. L. GLOVER. TREE AND Loc sAwlNG MACHINE. APPLICATION FILE-D JULY 5,1919. 1,347,504, Patented July 27, 1920.-

4 SHEETS-SHEET l.

N.' L. GLOVER.

TREE AND LOG SAWING MACHINE.

' AFPL|CAT|ON FILED JULY 5,1919. 1,347,504. Patented July 27, 1920.

4 SHEETS-SHEET 2.

I l rh' N. L. GLOVER..

TREE AND LOG SAWING MACHINE. l APPLICATION FILED IULY 5,1919.

1,347,504, Patented July 27, 1920.

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/yew lieg/Zier N. L. GLOVER.

TREE AND LOG SAWING MACHINE.

APPLICATION FILED 'IuLY 5. I9I9.

1,347,504. Patented July 27, 1920.

4 SHEETS-SHEET 4.

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NEWTON L. GLOVER, OF WINDOM, MINNESOTA.

TREE AND LOG SAWING MACHINE.

To all whom it may concern:

Be it known that l,"NEwToN"L. GLovER, a citizen of the'United States, residing at lVindom, in the county of Cottonwood and State of Minnesota, have invented certain new and useful Improvements in Tree and Log Sawing'Machines;and I doL hereby declare thefollowing to be a full, clear, and exact description of the' invention, such as will4 enable others skilled Lin the art to' which it appertains to make'vand use thesame.

'My invention r'elatestotree and log sawing machines, the same' being of a type adapted to saw down standing trees and then to saw up a trunk into logs of the desired length. Generally stated, the invention consists of the noveldevices and'combinations of devices hereinafter described and defined in theclaims.

My invention is, therefore, in the nature of a portable self-contained saw mill adapt` ed for the purpose above indicated, and when designingthe'same, it was kept in mind that such a mill mustbe, not only highly efficient forthe purposes had-in view, but should be of comparatively light structure, of relatively small cost, capable of easy transportation and quick application in position for work.

In the portable saw mill Which' I have constructed, in accordance withmy invention, and which is illustrated in the accompanying drawings, theabove general objects have been accomplished and other important features which will hereinafter appear, have been found present. p

In 'the accompanying drawings which illustratethe invention,.like Vcharacters inv dicate like parts throughout the several views. i

Referring to the drawings t,

Figure 1 is a.. plan view of the portable saw mill showing the sameapplie'd to saw down a standing tree;

Fig. 2 is an enlarged fragmentary viewv ofa' portion' of one'of the' saw grinding and feeding devices F ig. 3 is a fragmentary viewshowing the left Vhand endv of a saw and of the mill framework and particularly illustrating the construction of theextensible saw operating lever; Y

Fig. 4 is a fragmentary perspective show- Specification of Letters Patent.

Patented July 27, 1920.

LApplication led'July 5'J 1919. Serial No. 308,857.

ing the connection between the saw and saw operating lever;

Fig. 5 is a detail with some parts sectioned on the line 5)*5 of Fig. 3;

Fig. 6 is a perspective view showing a portion of the saw and of the mill frame and particularlyillustrating the adjustable means for guiding and feeding the saw;

Fig. 7 is a fragmentary detail with some parts sectioned on the line iL-7 of Fig. 6;

F 1g. 8 is a vertical section taken approxi mately on the line 8-8 of Fig. 6, some parts beingshown in full;

Fig. 9 is a section taken approximately on the line 9-9 of Fig. 1, `some parts being broken away;

Fig. 10 is a detail in side elevation of one of the extensible saw feeding and guiding bars orplu-ngers;

Fig. 11 is a detail in -side elevation of one of the plunger caps removed from the cooperating plunger or feed bar;

Fig. 12 is a -section taken substantially on the line 12-12 of Fig. y3;

Fig. 13 is a section taken on the line 13-13 of Fig. 12, some parts being broken away; and

Fig. 14 is an elevationishowing the saw mill or machine applied to a fallen tree runk and operative to saw the trunk into ogs. y

The `framework of the sawing machine is a rectangular structure made up chiefly ofa rectangular tube 15 and an underlying tube 15a, a laterally offset tube 16 and an underlyingtube 16, cross connecting tube 17 and an underlying tube 17, a cross tube 18n and an underlying tube 18a, and a verti- 'cal coupling devices 19 that connect the said tubes at four corners of the said main frame. The upper cross tubes 17 and 18 are extended beyond the left side of the main frame proper.

The tubular cross bars 17-17a, 15S-18a, extend beyond the left hand tubes 15-15a and are rigidly connected by vertical couplings 2021 (see particularly Figs. 1, 3 and 12) to vertically spaced horizontal and parallel rack bars 22. The said cross bars 1717l, 18-18"l are preferably of iron or steel pipes and the said bars 18--18a are extended to the left considerably beyond the rack bars 22 and at their outer ends are Lever guiding bars 24 (see F ig. 12) arelsecured in respect to the left hand projecting ends of the bars 18--18a and are vertically spaced at their -adjacent edges to afford a guide for a lsaw operating lever hereinafter to be described.

The main frame described has a supplemental laterally adjacent portion,` and, as

shown, this supplemental frame is made up' of a rectangular tube 25 and entension rodsV or bars 26 and 27.V The bar 25 is like the bar 15. '.The extension bars or rods 26 and 27 work telescopically in the tubes 17 and 18, respectively, and at their outer ends, they are rigidly secured to the ends of the angular barL or tube 25, so that the said bar 25 is mounted for lateral adjustments to and from the main frame andV is held always parallel to the rectangulartube 15.

TWorking telescopically through the rec tangular tubes 15=and 25 are saw feeding bars'28 provided with rack teeth on their upper edges.

The saw, which is of the cross-cut type, is indicated by the character A, and this'saw works in deep horizontal slots 28 cut in the forwardly projected ends of the said feedingbars 28 V(see particularly Figs. 6, 8, 9 and 10). The split front end portions of the feed bars 28 are cylindrical and are fitted with tubular caps 29 formed with deep slits that also clear the saw. Just rearward of their outer cylindrical end portions, the feed bars'28 are flattened to afford guides for upper and lower vertically spaced follower bars 30, to the ends of which are -journaled small rollers 31 (see particularly Figs. 2, 8 and 9) that engage the back of the saw to force the same to its work. rlhe upper., bars .30 are connected by coiled springs 32 to the coperating caps 29. Seated'in the end of each cap 29 is a wooden or non-metallic plug 33 with which the saw teeth engage when the saw is out of action.

For imparting simultaneous like outward and like inward movements to the feed bars 28, pinions 34 mesh with theV rack teeth on the respective ,bars 28 through suitable openings'in'the tubes ofthe tubular bars 15 and 25. Left hand gear 34 is secured to and rotated with a tubular shaft 35 and right hand pinion 34 is secured to and rotated with a'shaft 36. Shaft 35 is journaled in suitable bearings on the frame bars 15 and 16 and projects to the left of the former. Shaft 36 telescopes in tubular shaft 35 and is causedv to rotate therewith by a key 37 j (see Fig.-7).

VA crosshead 38, which affords a fulcrum for the sawV operating lever, presentlyto be described, is mounted to slide forward and rearward on rack bars 22. VThe numeral 39 indicates a rack bar that extends parallel to rack bars 22, and at its rear end, is

secured to crosshead 38. Rack bar 39, on its underside, has rack teeth, and its upper edge runs under a guide lug 40 of a bracket 41 that is rigidly secured to the projected end of frame bar or tube 18. This rack l39 meshes with avpinion 42 (see Fig. 5)

journaled to bracket 41 and runs in mesh with a spur gear 43 secured to the extended end of the tubular shaft 35.

The numeral 44 indicates an internal combustion engine mounted in the main frame, the same, as shown, being detachably secured to secondary cross bars `45 of the main frame. A belt 46 runs over a pulley 47 on the engine crank shaft and over a pulley y48V on a counter shaft 49 journaled in suitable bearings on the main frame and provided with a beveled pinion 50. Bev!` extensible saw operating lever, which latter 1s 0f novel construction and relative arrangement, and the one arrangement of which will now be described.

Crosshead 38 that slidesV on Xed racks 22 is provided with laterally projecting vertically spaced fulcrum lugs 57 in which is journaled a shortrvertical shaft ior` post 58 shown as equipped, at its upper end, with a hand wheel 59. At the central portioniof shaft 58.1adjacent to the fulcrum lugs 57, spur gears 60 are secured to post 5S and mesh with the two racks 22. A` larger spur gear or pinion 61 is secured to Vthe post 58 midway between the gears 60, embracing the pinion 61, loosely pivoted on post 58 and interposed between upper. and lower gears 60 is a rectangular guide box 62 that affords a part of the fulcrum for the saw operating lever proper. A V i vThe saw operating lever, as indicated, is an eXtensible lever. As shown., it is made up on two rack bars 63 and v64, having teeth on their opposing edges that are in mesh with the pinion 61.(see particularly Figs. 1, 2 and 13). These two lever forming rack bars 63 and 64 slide through the guide bonY 62 and are thereby heldin proper mesh with the said pinionl 61.,v At its ends, the rack bar 63 has laterally projecting guide brackets 65, through wliich'tl1`eV rack bar 64'is arranged to slide. Rack bar 64, 'at its forwardly extendedend, projects much forward of the front end of the'rack bar 63, and at its front end, (see Figs. 3,4 'andv 12), it is providedl with a 4`rigidly secured fork 66, which, by pins 67, is pivoted to a chan- 69 secured to one endV of the saw A. Vith this construction, movements of the head 68, under the action of the extensible saw operating lever, will move the saw endwise but permit the saw to shift its its operating plane.

In Figs. l and 9, I have shown a device to assist in anchoring'the frame to the tree trunk, and as shown, this anchoring device comprises a tube 70 secured to the intermediate portion of frame bar 18, and a pointed pin or anchoring rod 71 that works through said tube and is adapted to be driven into the tree.

Fig. 14 illustrates the use of the sawing wheel or machine for sawing a fallen tree trunk into logs. In Figs. l and 9, a standing tree trunk is indicated by the character B and in Fig. 14, the fallen trunk is indicated by the character B. Insawing the l 7 position in logs, as indicated in Fig. 14, the engine isA removed from the main frame and anchored by suitable means on the'tree trunk. In this arrangement, the anchoring pin l7l is driven down into the log and normally assists in holding the framework while the 'saw is being forced to its werk. To further hold the framework in its upright position, I provide two-part telescopic arms 72 and 73, the upper end of which is dctachably pivoted to the upper portion of the frame, and at the lower end of which is a bar adapted to be driven intoV the log.

The operation of the saw mill applied for sawing down a standing tree is as follows: The framework is placed on the ground adjacent tothe tree, and with the toothed edge of the saw in position for action on the tree trunk close to the ground. Then the engine is in action, the extensible saw operating lever 63-64 will, throughl the pitman 56, be oscillated on the axis of the shaft 58 and the saw will thereby be rreciprocated with its teeth running against the tree trunk and with 'its back edge running against the wheels 3l of the followers 30. By rotation of the hand wheel 59 in a clockwise direction in respect to Fig. l, the rack bar or memberV 64 of the saw feeding lever will be fed forwarder towardV the saw, and the crosshead 38, by a gear 60, will be caused tov travel forward or toward the saw. Thus it will be seen that when shaft or-post 58 is rotated, as stated, gears 60 will travel forward on fixed rack bars 22, carrying the lever fulcrum afforded by the crosshead 38 forward with it, and at the saA ie time, pinion 6l moves rack bar 64 forward, not only in respect to the main frame, but also in respect to crosshead 38, at the same time, moving rack bar 63 rearward in respect to the said crosshead. In this way, with the pinion 6l and gears 60 properly proportioned, the front and rear ends of the saw operating lever are proportionately extended, so that, for different adjustments of said lever, the saw will always be given approximately the same travel, by the crank pin 56 carried by gear Forward movement of crosshead 58 carries rack bar 39 forward, and the latter acts on pinion 42, through gear 43, rotates each sectional'shaft 35-36, thereby causing gears 84 to simultaneously move the two feed bars i8 forward. In fact, when the saw is in action, the bifurcated front ends of bars 28 will engage blocks 33, force caps 29 forward, thereby putting spring 32 under tension and causing the rollers 3l of followers 30 to press the saw to its work at the same time the said blocks 33 are carried forward out of engagement with the teeth of the saw.

The arrangement of the gears described is such that the advance feed movement given to the saw will approximately equal the forward advance movement given to the free front end of lever bar 64. However, these two movements may slightly vary, and moreover, the saw-should not be made to follow the arc of `movement of the front end of they said lever bar 64. For this reason, the head 68 to vwhich the lever bar 64 is pivoted at 67, is made to freely slide on the fianges 69 of the saw, as already described.

By the arrangement described, the saw is given a proper reciprocating movement and is yieldingly pressed to its work in such nanner as to produce the most eflicientsawing action. As the saw is yieldingly pressed at points on opposite sides of the tree trunk or log, it is possible for the saw to take a slight oscillating movement on the plane of its blade, so as -to closely approximate the movement usually given a. cross-cut saw when manually operated by two persons, one at each end of the saw.

'Then the tree trunk has been sawed as nearly through as thought desirable, it may be retracted by rotating the hand wheel 59 in an anti-clockwise direction.

The frame structure of the portable saw mill is such that it be located flatwise on the ground with the saw, either at, or slightly above the surface of the ground. Portions of the frame, if desired, may be dug slightly into the ground. This device is adapted for use either onlevcl surfaces or on side hills and will hold the saw for movement parallel to the surface of the ground, whether level or inclined.

Vhat I claim is:

l. A saw mill of the kind described comprising a framework` a saw blade, means for guiding and pressing said saw blade to its work, a saw operating lever pivotally associated with said frame, and a motor on said frame with connections for oscillating saidlever, said lever being extensible in opposite directions from its fulcrum as saidv lever `is extended to follow the feed move-y said frame for guiding and feeding saidVY saw blade to its work, a two-part extensible lever intermediately fulcruined to said main frame, one end of one of the members of said lever being connected to said saw blade, andthe other end of the other member of vsaid lever being connected to and driven from said motor, and means for simultaneously moving the said lever members in opposite directions from their fulcrnm.V

3. A portable saw mill. comprising a framework, a saw blade, laterally spaced feed bars arranged to guide said saw and provided with yielding followers operativ on the back edge of the saw to force the same to its work, and motor actuated means for reciprocating said saw. l

4. A portable saw mill comprising a framework, a saw blade, laterally spacedfeed bars arranged to guide said saw and provided 'with yielding followers operative on the vback edge of the saw to force the same to its work, an extensible approximately constant. throw lever pivotally associated with said framework and operating on said saw blade, and a motor connected to and operating said lever.

5. A portable saw mill comprising a framework, a saw blade, laterally spaced feed bars arranged to guide said saw and provided with yielding followers operative on the back edge of the saw to force the same to its work, an extensible approximately constant throw lever pivotally associated. with said framework and operating' on said saw blade, a motor connected to and operating said lever, and manually operated connections for simultaneously 'extending said lever and moving said saw guidingbars to press the saw to its work.

6. A portable saw mill comprising a framework, a saw blade, laterally spaced feed bars arranged to guide said saw anc provided with yielding followers :operative on the back edge of the sawto' force the same to its work, an extensible approxt mately constantV throw lever l pivotally associated with said framework and operating on said saw blade, and a motor connected tov and operating said lever, one of' said saw. guiding and feeding bars being laterally adjustable in respect to the other to thereby position the two guide bars on opposite sides of the tree trunk or log.

Y. In a portable saw mill, the combination with a framework, a saw blade, and

`means applied to said frame for guiding and feeding said saw blade to its work, of motor actuated means for reciprocatingsaid saw, said means comprising a two-part intermediately fulcrumed lever, the front end Vof the relatively long members of said lever being connected to said saw and the rear endl of the relatively short member of said lever being connected to the motor, and means for extending the long and short members of said lever, the former faster than the latter during the sawing action.

8. ln a 'portable saw mill, the combination with a framework, a saw blade, and means applied to said frame for guiding and feeding said saw blade to its work, of motor actuated means for reciprocating said saw, said means comprising a two-part intermediately fulcrumed lever, the front end of the'relatively long members of said lever being connected to said saw and the rear end of the relatively short member of said lever being connected to the motor, and means for extending the long and short members of said lever, the former faster than the latter during the sawing action, the saw feeding and lever extending means being connected for simultaneous movements during the advance movement of the saw to its work.

9. ln a portable saw mill, the combination with a framework, a saw blade, and means applied to said frame for guiding and feeding said saw blade to its work," of motor actuated means for vreciprocating said saw, said means comprising a guide rack fixed to said frame, a fulcrum bracketv Vmovable on said guide rack, a manually operated shaft journaled to said fulcrum bracket, a on said shaft engageable with said said lever beingrelatively long and con-Y uide rack to movesaid fulcrum bracket,

nected to the saw blade, and the rearwardly extended rack of said lever being relatively short and having a crank and pitman connection'to the driving motor.

l0. In a portable saw mill, the combination with a framework, a saw blade, and means applied to said frame for guiding and feeding said saw ,blade to its work, of motor actuated means for reciprocating said saw, said means comprising a guide rack fixed to said frame, a fulcrum'bracket.movable on said guide rack,1a manually operated shaft journaled to said fulcrum bracket, a gear on said shaft engageable with said guide rack to move said fulcrum bracket, a second gear on said shaft, a saw .operating lever made up oftw'o racks engageable with said second gear and both movable in respect to said fuli directions from its fulcrum, the forwardly extended rack ofsaid lever being relatively long and connected to the saw blade, the rearwardly extendedrack of said lever being relatively short and having a crank and pitman connection to the driving motor, another rack connected to and moved by said fulcrum bracket, a gear meshing with said last noted rack, and connections between said last noted gear and the saw feeding means for advancing the saw to its work simultaneously with the extension of said saw operating lever.

11. In a portable saw mill, the combination with a main frame having laterally extensible supplemental frame sections, a saw blade, motor actuated means for reciprocating said saw blade, a pair of saw guiding and feeding bars mounted, one on the main frame and one on the supplemental laterally adjustable section thereof, yielding means on said guide bars operative on the rear edge of the saw blade to force the same to its work, gears engaging rack teeth on said guide bars, and means for simultaneously rotating said gears to thereby simultaneously advance said guide bars and press thepsaw blade to its work.

12. In a portable saw mill, the combination with a framework, a saw blade, means on said frame for guiding said saw and forcing the same to its work, a head having sliding movement with one end of said saw, an extensible motor-actuated saw operating lever mounted on said frame and connected to said slidable saw head.'

.13. In aportable saw mill, the combination with a framework, a saw blade, means on said frame for guiding said saw and forcing the same to its work, a head having sliding movement with one end of said saw, an extensible motor-actuated saw operating lever mounted on said `frame and connected to said slidable saw head, anda connection between said extensible lever and the saw feeding means for simultaneously advanc-V mounted on said frame and connected to said saw for reciprocating the same, and a connection for simultaneously advancing said guiding and feeding bars and for extending said lever, said saw feeding and guiding bars having yielding elements pressing the saw to its work, and said extensible lever having a slidable connection with said saw blade.

16. In a portable saw mill, a frame, a saw blade held thereby, laterall spaced feed bars arranged to guide said glade and lprovided with yielding followers operative on the back edge of the saw blade to force the same to its work, extensible rack bars with pinion between on hand controller shaft connected by auxiliary rack and pinion on said shaft to frame, forming an extensible contractable operating lever oscillating the saw blade, said shaft forming a movable fulcrum for said oscillating lever; said racks and pinions so proportioned, that the fulcrum, during its movements, Vremains at all times in proportionate distance from the points of power and work applied and the end of the lever oscillating the saw is advanced and withdrawn synchronomically with the feed bars guiding the saw.

17. In a portable saw mill of the kind described, tlie combination of a frame work, a saw blade held thereby, hand controlled shaft pivotally associated with said frame, said shaft forming a fulcrum for the operating lever of said saw blade when oscillating, means of advancing said oscillating saw blade by turning said shaft in one direction and withdrawing it by opposite turn. Said movements coincidently and synchronomicallyz-(a) Presses said blade to its work or withdraws it. (b) Advances the saw blade or withdraws it. (c) Lengthens the oscillating lever or shortens it. (d) Advances the fulcrum or withdraws it in its relative position at all times with the power and the work.

18. In a portable saw mill, a frame work, a saw blade, forward and backwardmovable guides therefor, a movable fulerum for a lever oscillating the saw blade, means by racks and pinions of advancing and withdrawing the end of the oscillating lever connected with the saw blade and its guides synchronomically with the advance andA withdrawal movement of the fulcrum, in like direction, to a uniform oscillating stroke during said advance or withdrawal.

In testimony whereof I affix my signature in presence of two witnesses.

NEWTON L. GLOVER. Witnesses:

H. A. STUCKER, FLOYD E. MARsHALL. 

